When you say ethereum is the best coin to mine on GPU/CPU at the moment, I think you need to check the Difficulty chart of ethereum how It's going up since last 2 days, keeping in mind that It's not profitable as much as It was 3 days back... kindly take a look !
https://www.coinwarz.com/difficulty-charts/ethereum-difficulty-chart
RE: The Best Coins to mine with GPU/CPU right now (ETH algo rocking it!)